Derby Chert











Natural Form:



Description of Physical Characteristics:

Color:  Derby chert can vary in color from a light medium gray to a medium dark gray.  White or dark gray banding may be present.

Texture: 
Fine grain

Luster: Waxy to vitreous

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Primary outcroppings are found in Perry County, Indiana

 

Projectile point made from this material:



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References: (See Reference Page, Entry Number):

Similar Material:
Commonly made projectile point from this material:

Archaeological Context: